I am looking for a way to send a notification to all users who are added into a collection. For example, I have an action that add users into a collection named "Users". Once the request is submitted, I want an email to be sent to all users in this collection.

Thanks Anoir. I thought of using this method already but the thing is that I want this to be used once as in the process the raise user will be notified multiple times. And I don't want the people in CC to be notified every time a reminder is sent to the raise user. Do you have any idea how can we do that?